1-17. Developing    the    display    or picture   on   a   CRT   by   using   a series    of    horizontal    lines across   the   face   of   a   CRT   is known   as   what   type   of scanning? 1 Raster    scan 2 Vector    scan 3 Interlaced    vector    scan 4 Noninterlaced     vector scan 1-18. Interlacing    the    picture displayed     on     a     CRT     increases the    resolution    of    the picture    by    increasing    the number   of   lines   per   frame   by what    factor? 1. 1 2. 2 3. 3 4. 4 1-19. What, if   anything,   is   a disadvantage    of    using    an interlaced    scan    CRT    for graphic    digital    displays? 1. 2. 3. 4. Decrease    in    resolution Visible    flicker    when displaying    fine    graphics Increase    in    the    time required    to    refresh    the display Nothing; there   is   no disadvantage    in    using interlaced    scan 1-20. 1-21. 1-22. 1-23. To   display   a   frame   of   data on   a   CRT   that   uses noninterlaced    scan,    the number     of     lines     displayed     is increased    by    (a)    the horizontal    frequency    and (b)       the    vertical frequency. 1 . (a)    Increasing (b)    decreasing 2 . (a)    Increasing (b)    increasing 3 . (a)    Decreasing (b)    decreasing 4 . (a)    Decreasing (b)    increasing A   vector   scan   CRT   uses   what coordinate    system    to position    the    electron    beam? 1 . P o l a r 2 . Rectangular 3 . Spherical 4 . X / Y With    respect    to    the    origin, where    will    a    positive    X value   and   a   positive   Y   value position    the    CRT    beam? 1. To   the   right   and   above 2. To   the   right   and   below 3. To   the   left   and   above 4. To   the   left   and   below With    respect    to    the    origin, where    will    a    negative    X value   and   a   positive   Y   value position    the    CRT    beam? 1. To   the   right   and   above 2. To   the   right   and   below 3. To   the   left   and   above 4. To   the   left   and   below 3